A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

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The Advanced Test Accelerator (ATA) is a linear induction accelerator for electrons with design goals of 50 MeV and 10 kA. The accelerator consists of a 2.5 to 3 MeV injector and 170 accelerating units, each unit capable of an applied voltage up to 350 kV. At a number of positions in the accelerator, the return current in the beam pipe is measured as a function of time as the beam passes that position. The measuring device, a four quadrant addition, is somewhat sensitive to the transverse position of the beam centroid as well as transverse distribution of current in the beam. Therefore a time-dependent signal may indicate time-dependent transverse motion or beam structure as well as an axial modulation of the beam current. These signals sometimes exhibit spikes and notches on the leading and trailing edges of the beam pulse. The presence of these rapidly varying signals during the rise and fall of the current stimulated this work. 2 references, 4 figures.

Technetium (Tc) is a major fission product with a fission yield similar to {sup 90}Sr and {sup 137}Cs. All traces of the natural element have disappeared due to decay over the earth`s history. The major isotope present in cooled nuclear fuel is {sup 99}Tc with a half life of 2.12 {times} 10{sup 5} years. This isotope decays via low energy (0.292 Mev) beta emission which is easily absorbed and contributes little penetrating radiation hazards in fuel reprocessing. Because it is difficult to detect, the distribution of {sup 99}Tc in the F and H area process streams is not generally well known. Previous studies have shown that a significant fraction of Tc follows uranium through the solvent extraction process. This study was conducted to analyze the {sup 99}Tc content of SRP uranium product streams, to assess any hazard due to {sup 99}Tc and to evaluate the impact of future higher burnup fuels on {sup 99}Tc levels in uranium products. This summary report presents {sup 99}Tc assays in uranium streams in F and H areas, relates these concentrations to solvent extraction conditions in the two areas, and compares the incremental radioactivity from {sup 99}Tc in the product streams to the uranium itself. …